A car covers a distance in 30 minuts with an average speed of 60Km per hour. what. should be the average speed of the car to cover the same distance in 20 minuts ?
Answers
Answered by
4
The speed of car is something 40km per hour
yuvraj992002:
in 20 minutes
yes
Answered by
11
Here, the easiest method to find the answer is by using ratio and proportion method
Therfore....
Distance [I] = 60 km
Time [I] = 30 minutes
Distance [II] = 20 km
Time [II] = I not known
Let Time [II] be x
According to the law of proportion..
Product of Extremes = Product of Means
30x = 60 * 20
x = 60 * 20 / 30
x = 1200 / 30
x = 40
Therfore, the car covers 40 km in 20 minutes.
:-) If it's clear, mark me as brainliest.
Therfore....
Distance [I] = 60 km
Time [I] = 30 minutes
Distance [II] = 20 km
Time [II] = I not known
Let Time [II] be x
According to the law of proportion..
Product of Extremes = Product of Means
30x = 60 * 20
x = 60 * 20 / 30
x = 1200 / 30
x = 40
Therfore, the car covers 40 km in 20 minutes.
:-) If it's clear, mark me as brainliest.
but the answer is 90 Km per hour
because its of maths not of physics
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